Exercises

Hazardous operations on September 29 from 1300 to 2300 UTC within one mile of 32-52.80N 118-17.70W off California.

North Pacific Ocean · NAVAREA XII 658/26

What this record establishes

Cancelled notice · 2026-09-24 15:00Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates: NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-21 21:08Z. First collected 2026-09-24 16:32Z; last seen in collection 2026-09-24 23:17Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: North Pacific Ocean. The parsed report position is 32.880, -118.295 with a 1.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the North Pacific Ocean →

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2026-09-29 13:00Z	2026-09-29 23:00Z	—	10 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued: 2026-09-21 21:08Z
status: Cancelled notice
self-cancels: 2026-09-30 00:01Z
NAVAREA: NAVAREA XII
sea: North Pacific Ocean
position: 32.880, -118.295 · r 1.0 nm
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-24 16:32Z

Original warning text

NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 291300Z TO 292300Z SEP
   IN AREA WITHIN ONE MILE OF 32-52.80N 118-17.70W.
2. CANCEL THIS MSG 300001Z SEP 26.

Reading this warning

Hazardous operations: NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
Date-time group (DTG): A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Within a radius of: A circular area — every position within a stated distance of a point.
Position (degrees and minutes): How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · military exercises

1073 within 180 nm since 1999 · 27 in the last 12 months · 3 listed in force now

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…Exercises · 7.9 nm
Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-52.70N 119-11.96W, 33-08.06N 118-52.09W,…Exercises · 28.7 nm
Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-33.00N 118-25.00W, 32-35.00N 118-16.00W,…Exercises · 40.1 nm
PQ63+HX los angeles, ca, USASpills · 50 nm
Coronado island south light 32-23.5N 117-14.5W unlitNav aids · 60.8 nm

Worldwide in the collected sources

17 military exercises listed in force · see all

Record snapshot 2026-09-24 23:26Z; source collection times vary.

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.